This started as a fun little blast to the past but the difficulty spike when you get to around world 4 and world 8 are insane. It's something to where the game becomes more annoying to play because their idea of level design is throwing like 500 of those annoying enemies, something akin to bad Mario Maker levels. It was a nice romp until I got to the final boss which soured my entire mood, while he wasn't hard i'm pretty sure it's a universal bug where the boss would disappear from the stage and then never return, this happened to me about 5 times before I finally beat it, but the damage was done. For a cute little 2000's 2D platformer, it's fine, but nothing worth checking out other than nostalgia.